Avoidant personality disorder (sometimes abbreviated APD or AvPD), or anxious personality disorder, is a personality disorder characterized by a pervasive pattern of social inhibition, feelings of inadequacy, extreme sensitivity to negative evaluation and avoiding social interaction. People with avoidant personality disorder often consider themselves to be socially inept or personally unappealing, and avoid social interaction for fear of being ridiculed, humiliated, or disliked. They typically present themselves as loners and report feeling a sense of alienation from society.

Avoidant personality disorder usually is first noticed in early adulthood, and is associated with perceived or actual rejection by parent or peers during childhood. Whether the feeling of rejection is due to the extreme interpersonal monitoring attributed to people with the disorder is still an open question.

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The American Psychiatric Association's DSM-IV-TR, a widely used manual for diagnosing mental disorders, defines avoidant personality disorder as a "pervasive pattern of social inhibition, feelings of inadequacy, and hypersensitivity to negative evaluation, beginning by early adulthood and present in a variety of contexts, as indicated by four (or more) of the following:

Avoids occupational activities that involve significant interpersonal contact, because of fears of criticism, disapproval, or rejection

Is unwilling to get involved with people unless certain of being liked

Shows restraint within intimate relationships because of the fear of being shamed or ridiculed

Is preoccupied with being criticized or rejected in social situations

Is inhibited in new interpersonal situations because of feelings of inadequacy

Research suggests that people with avoidant personality disorder, in common with social phobics, excessively monitor their own internal reactions when they are involved in social interaction. However, unlike social phobics they also excessively monitor the reactions of the people with whom they are interacting. The extreme tension created by this monitoring may account for the hesitant speech and taciturnity of many people with avoidant personality disorder. They are so preoccupied with monitoring themselves and others that producing fluent speech is difficult.

Avoidant personality disorder is reported to be especially prevalent in people with anxiety disorders, although estimates of comorbidity vary widely due to differences in (among others) diagnostic instruments. Research suggests that approximately 10-50% of the people who have a panic disorder with agoraphobia have APD, as well as about 20-40% of the people who have a social phobia (social anxiety disorder). Some studies report prevalence rates of up to 45% among the people with a generalized anxiety disorder and up to 56% of the people with an obsessive-compulsive disorder (Van Velzen, 2002). Although it is not mentioned in the DSM-IV, earlier theorists have proposed a personality disorder which has a combination of features from borderline personality disorder and avoidant personality disorder, called "avoidant-borderline mixed personality" (APD/BPD) (Kantor, 1993, p.4).

The cause of avoidant personality disorder is not clearly defined, and may be influenced by a combination of social, genetic, and biological factors. The disorder may be related to temperamental factors that are inherited. Specifically, various anxiety disorders in childhood and adolescence have been associated with a temperament characterized by behavioral inhibition, including features of being shy, fearful, and withdrawn in new situations. [1]

Many persons diagnosed with avoidant personality disorder have had painful early experiences of chronic parental criticism and rejection. The need to bond with the rejecting parents makes the avoidant person hungry for relationships but their longing gradually develops into a defensive shell of self-protection against repeated parental criticisms. [2]

People with avoidant personality disorder are preoccupied with their own shortcomings and form relationships with others only if they believe they will not be rejected. Loss and rejection are so painful that these individuals will choose to be lonely rather than risk trying to connect with others.

Hypersensitivity to criticism or rejection

Self-imposed social isolation

Extreme shyness in social situations, though strongly desire close relationships [2]

Treatment of avoidant personality disorder can employ various techniques, such as social skills training, cognitive therapy, exposure treatment to gradually increase social contacts, group therapy for practicing social skills, and sometimes drug therapy (Comer, 1996). A key issue in treatment is gaining and keeping the client's trust, since people with APD will often start to avoid treatment sessions if they distrust the therapist or fear rejection. The primary purpose of both individual therapy and social skills group training is for individuals with avoidant personality disorder to begin challenging their exaggeratedly negative beliefs about the self (Eckleberry, 2000). While not endorsed by the psychological community, a number of websites have appeared which purport to offer tips to people with avoidant personality disorder[How to reference and link to summary or text]. The main idea which runs through these websites, an idea with which the psychological community would agree, is that persons suffering APD have unrealistically negative views about themselves, and that challenging these beliefs is the first step to overcoming this affliction.

People with avoidant personality disorder often experience vicious cycles of withdrawal in which the avoidant helps to create the anticipated rejection (Kantor, 1993, Chapter 5). Other people interpret the avoidance of the person with APD as a sign that the avoidant does not like them, and react by avoiding the person. This reinforces the avoidant's fear of rejection and encourages further withdrawal.

Another common development is the appearance of so-called "second-line defenses" in order to deal with the anxiety that the avoidance creates (ibid.). Examples of such defenses are a denial of the fear of rejection, or a replacement of their fear of rejection with a defensive insensitivity. The latter mechanism is called "hardening".